1 files changed, 35 insertions, 0 deletions
diff --git a/azalea-client/tests/reply_to_ping_with_pong.rs b/azalea-client/tests/reply_to_ping_with_pong.rs
new file mode 100644
index 00000000..4ef5b2cc
--- /dev/null
+++ b/azalea-client/tests/reply_to_ping_with_pong.rs
@@ -0,0 +1,35 @@
+use std::sync::Arc;
+
+use azalea_client::{packet::game::SendPacketEvent, test_simulation::*};
+use azalea_protocol::packets::{
+    ConnectionProtocol,
+    game::{ClientboundPing, ServerboundGamePacket},
+};
+use bevy_ecs::observer::Trigger;
+use bevy_log::tracing_subscriber;
+use parking_lot::Mutex;
+
+#[test]
+fn reply_to_ping_with_pong() {
+    let _ = tracing_subscriber::fmt::try_init();
+
+    let mut simulation = Simulation::new(ConnectionProtocol::Game);
+    let reply_count = Arc::new(Mutex::new(0));
+    let reply_count_clone = reply_count.clone();
+    simulation
+        .app
+        .add_observer(move |trigger: Trigger<SendPacketEvent>| {
+            if trigger.sent_by == simulation.entity {
+                if let ServerboundGamePacket::Pong(packet) = &trigger.packet {
+                    assert_eq!(packet.id, 123);
+                    *reply_count_clone.lock() += 1;
+                }
+            }
+        });
+
+    simulation.tick();
+    simulation.receive_packet(ClientboundPing { id: 123 });
+    simulation.tick();
+
+    assert_eq!(*reply_count.lock(), 1);
+}